Superheavy elements | Radiochemistry
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PROMIUM
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The radiochemistry of chromium (Technical Report)
The radiochemistry of chromium. ... Lab. for Analytical Chemistry + Show Author Affiliations. A review of the nuclear and chemical features of particular interest to the …
ELEMENT: RHENIUM
The element is silvery white with a metallic luster; its density is exceeded only by that of platinum, iridium, and osmium, and its melting point is exceeded only by that of tungsten and carbon. The usual commercial form of the element is powder, but it can be consolidated by pressing and resistance-sintering in a vacuum or hydrogen atmosphere.
Selective Recovery of Chromium from Precipitates Containing d Elements
Reaction of Cr(III) hydroxides and mixed Fe(III)-Cr(III) and Ni(II)-Cr(III) hydroxides with persulfate ion in alkaline solutions was studied by spectrophotometry. The Cr(VI) yield (at oxidant deficiency) corresponds to the S2O8 2 - : Cr(VI) molar ratio close to 1.5. The initial reaction rate V 0 is described by the kinetic equation -d[Cr(III)]/dτ = k[Cr(III)][S2O8 2 …
The radiochemistry of chromium (Technical Report)
The radiochemistry of chromium. ... and a collection of radiochemical procedures for the element as found in the literature are included. (W.L.H.) View Technical Report. Cite } Export . Share . Save . Print . Details ...
Radiochemistry Society Hall of Fame
Once there he became involved in Glenn Seaborg's research program to expand the number of known elements beyond element 94. Albert Ghiorso has spent the last 52 years in nuclear science, starting with the Manhattan atomic bomb project. ... Gustavus Adolphus College, 1966; American Chemical Society Award for Nuclear Applications in Chemistry ...
ELEMENT: CERIUM
The element was discovered two years later in 1803 by Klaproth and by Berzelius and Hisinger. In 1875 Hillebrand and Norton prepared the metal. ... Sources: Los Alamos National Laboratory; CRC Handbook of Chemistry and Physics; American Chemical Society Element image from used with permission ...
Ask an Expert Archives
All elements are defined by the number of protons in the nucleus. Therefore, if one changes the number of protons in the nucleus one changes which element it is. In the case of Pu239 this is exactly the case. First, a neutron is captured and then the U239 that is formed is converted to Np239 via beta decay. The Np239 beta decays and is ...
Radiochemistry of Chromium (Technical Report) | OSTI.GOV
This monograph on the radiochemistry of chromium is one in a series covering the radiochemistry of essentially all the elements. It is a revised and expanded version of an earlier monograph. In it are included reviews of nuclear and chemical properties of chromium, discussions of methods of sample dissolution and of separation reactions ...
The Radiochemistry of Chromium
The Radiochemistry of Chromium. J. Pijck. Subcommittee on Radiochemistry, National Academy of Sciences-National Research Council, 1964 - Chromium - 34 pages. From inside the book . Contents. Review of those Features of Chromium Chemistry . 9: VI . 26: Separation Procedures . 35: 1 other sections not shown.
Periodic Table of Elements Cr
HYPERSEEING the Journal of the International Society of the Arts, Mathematics, and Architecture February 2007 ISAMA'07 MAY 18-21 BRIDGES DONOSTIA; ... Chromium description Your user agent does water support the HTML5 Audio element Chromium is steel-gray lustrous hard metallic and takes a copper polish Its. This mineral, chloride, the …
ELEMENT: COBALT
History (Kobald, from the German, goblin or evil spirit, cobalos, Greek, mine) Brandt discovered cobalt in about 1735. Sources Cobalt occurs in the minerals cobaltite, …
ELEMENT: YTTRIUM
Small amounts of yttrium (0.1 to 0.2%) can be used to reduce the grain size in chromium, molybdenum, zirconium, and titanium, and to increase strength of aluminum and …
Chromium Web Directory: ODP.org > Science > Chemistry > Elements …
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RADIOCHEMISTRY SOCIETY
New! Encyclopedia of Radiochemistry (Volumes I-IV) Special pre-order pricing: 50% off Download a free sample chapter, including the full table of contents, to see how this important work will improve your understanding of this crucial science.. The Encyclopedia is available in a four volume printed edition or on CD-ROM containing PDF versions of all …
Selective Recovery of Chromium from Precipitates Containing d Elements
Oxidation of various Cr(III) hydroxides and mixed Cr(III)-Ni(II) and Cr(III)-Fe(III) hydroxides with hydrogen peroxide was studied. The initial reaction rate increases as the Cr(III) content in the suspension and H2O2 concentration are increased and nonmonotonicaly decreases with increasing NaOH concentration within the 0.2-2.0 M range. The activation energy in …
Radiochemistry Society
Registration for Hands-On Radiochemistry Now Open. Seating is limited to only 8 Students. Seating is on a first come, first serve basis. Register. Calendar. JUN 17-28. Hands-On Radiochemistry ... The Radiochemistry Society provides this exclusive and highly limited training only once annually. Space is limited to only 20 individuals per course!
ELEMENT: CHROMIUM
Other compounds are of industrial value; lead chromate is chrome yellow, a valued pigment. Chromium compounds are used in the textile industry as mordants, and by the aircraft …
The Radiochemistry of [the Elements], Volume 7
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RADIOCHEMISTRY SOCIETY
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ELEMENT: OSMIUM
Calculations of the density from the space lattice which may be more reliable for these elements than actual measurements, however, give a density of 22.65 for iridium compared to 22.661 for osmium. At present, therefore, we know either iridium or osmium is the heaviest element, but the data do not allow selection between the two. Handling
RADIOCHEMISTRY SOCIETY
New! Encyclopedia of Radiochemistry (Volumes I-IV) Special pre-order pricing: 50% off Download a free sample chapter, including the full table of contents, to see how this …
Selective Recovery of Chromium from Precipitates Containing d Elements
Oxidation of Cr(III) hydroxides, double Fe(III)-Cr(III) hydroxides, and some examples of spinel phases NiCr2O4 and Fe(Cr,Fe)2O4 in alkaline suspensions (0.2-0.5 M NaOH) under the action of air and pure oxygen (1-3 atm) was studied. The reaction rate increases with increasing concentration of alkali, temperature, and oxygen pressure. Under these …
Adhesion property of AlCrNbSiTi high-entropy alloy coating …
Nuclear Science and Techniques (NST) is an international, peer-reviewed scientific journal sponsored by Shanghai Institute of Applied Physics, Chinese Academy of Sciences and the Chinese Nuclear Society. It was established in 1990 as a quarterly journal and has been changed to a monthly frequency in 2017. The journal is devoted to …
ELEMENT: ACTINIUM
History (Gr. aktis, aktinos, beam or ray). Discovered by Andre Debierne in 1899 and independently by F. Giesel in 1902. Occurs naturally in association with uranium minerals.
Radiochemistry of Chromium (Technical Report) | OSTI.GOV
This monograph on the radiochemistry of chromium is one in a series covering the radiochemistry of essentially all the elements. It is a revised and expanded version of …
Preparation of 57Co Möss sources in a chromium …
A cycle of studies resulted in the development of a simple technology for preparing 57Co Möss sources in a chromium matrix. X-ray diffraction studies and SEM examination of the surface morphology of specimens with different chemical histories (slides of 99.98% electrolytic Cr; thin films prepared by cold rolling; films of Cr metal on BeO supports, …
Radiochemistry Of Chromium [PDF] [10e5b26er19g]
CHROMIUM. Solvent Extraction G. H. Morrison J. Wiley in Analytical and H. Freiser. and Sons (1957). II. GENERAL REVIEWS ItThe Radiochemistry NAS-NS Chemistry. 3007 Jan. OF THE RfU310CHEMISTRY of Chromium". 1960 J. Pijck. Superseded by the present rewised III. OF ISOTOPES OF CHROMIUM.